from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A day job, especially at a large company, emphasizing banality.
- n. The workday itself (the period of the day between 9 am and 5 pm).
- n. One who works in a job from 9 am to 5pm.
From the common western business hours of 9:00 am to 5:00 pm. (Wiktionary)